WASHINGTON (Reuters) - The US Justice Department on Tuesday announced corruption charges against a senior government official and a contractor who worked to rebuild Puerto Rico's electrical grid after Hurricane Maria devastated the island in 2017.

In a 15-count indictment, US prosecutors allege that Ahsha Tribble, who oversaw the Federal Emergency Management Agency's efforts to restore electrical power after the hurricane, accepted helicopter rides, hotel rooms and other bribes from Donald Ellison, president of a company called Cobra Acquisitions LLC, which performed much of the work.

In return, Tribble pressured FEMA and the Puerto Rico Electric Power Authority to steer work to Ellison's firm, prosecutors say. Cobra was awarded two contracts worth $1.8 million, according to federal prosecutors in Puerto Rico.

Ruby Rodriguez, 8, looks back at her mother as she wades across the San Lorenzo Morovis river with her family in Morovis, Puerto Rico. Gerald Herbert/AP

Prosecutors also charged Jovanda Patterson, a former FEMA deputy chief of staff who they say evaluated Cobra's work even as she was trying to get a job with the company. Patterson also lied about her government pay to secure a higher salary at Cobra, they say.

FEMA and Cobra's parent company, Mammoth Energy Services Inc., both said they were cooperating with the investigation. Tribble and Patterson were not immediately reachable for comment. Attorneys for Ellison did not immediately respond to a request for comment.

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